Genesis 37:26-28

Y'hudah said to his brothers, "What advantage is it to us if we kill our brother and cover up his blood?

Come, let's sell him to the Yishma'elim, instead of putting him to death with our own hands. After all, he is our brother, our own flesh." His brothers paid attention to him.

So when the Midyanim, merchants, passed by, they drew and lifted Yosef up out of the cistern and sold him for half a pound of silver shekels to the Yishma'elim, who took Yosef on to Egypt.